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Flower purple, 12–19 mm long; pedicel 1 mm long, not expanding as the pod matures; bracteoles 1.5–4 mm long, filiform, 1-nerved.
Standard asymmetrical, without appendages; keel with a small obtuse pocket on the left-hand petal, twisted towards the right.
Calyx pubescent; tube c. 3 mm long; lobes 5–8 mm long, acute, the lower longer, the upper two united for half their length.
Peduncle 20–30 cm × 0.8–2 mm, sparsely hairy; rhachis 0–4 mm long, 1–2-noded, internodes 1–3 mm long.
Pod c. 5 cm × c. 3 mm, linear cylindrical, with a straight beak, ± hairy.
Perennial erect herb, 20–50 cm tall, sometimes trailing up to 1 m long.
A slender herb with laxly pilose, prostrate, or perhaps twining, stems
Seed c. 2 × 2 mm wide, hilum central, rim aril present.
Fairly large mauve flowers.
Stem sparsely hairy.
Ovary 15–23-ovuled.
